. >>> plead guiltywelcome back to mosaic. we are talking about an evil around us. we are here with sister mary who is deeply involved in trying to rid the world of this awful thing. how is it for you? is it tiring? >> it's exhausting to hear the types of trafficking and the types of people and the victims and the numbers. we have no idea of the real numbers. we hear as high as 27 million. we hear in the estimated report it's 9 million. it's too many that people are held in this country with slavery where we thought slavery had ended. >> you talk at all levels, you say organized crime, friends. it's something that has been found to be a way of doing businesses with people. >> the department of public health and human services estimate it's a $30 billion business. many drug dealers are moving into trafficking because it's more lucrative. when you sell an ounce of cocaine, it's gone. but a human, you make money continuously. >> where you have people with families do you know of something carried through with families? >> i know of one in the area where yes. this is ha